Improvement in jack-spool



Q stent domine..

DANIEL R. DAY, oF RINDGE, NEW HAMPSHIRE, AND JOHN e. FOL- SoM, 0F WINcH-ENDQN, MASSACHUSETTS.

Letters Patent No. 94,576, (lated September 7, 1869.

IMPROVEMENT IN JACK-SPOOL.

The Schedule referred to in these Letters Patent and making part of the same.

. To all whom it may concern Be it known that we, DANIEL R. DAY, of Rindge, in the county of Cheshire, in the Stat-e ot'New Hampshire, and JOHN G. FOLSOM, of Vif'ilicheudon, in the county of \Vorcester, mld 'Oounnonn'eath of Mussochusetts, have invented certain new ond useful 1inproveinents in the Mode ofSeciuing the Hcuds'to Jack-Speels; lend the following is ofull, clezulend exact description of' the suine, reference being hal-,l to the accompanying drawings, making n, part of Lhis specification, in which the ligure shows a. section through one end of a. jock-spool, with the body or` shaft broken off.

Our invention is an improvement on our former pai-tent granted to us, bearing darte August 22, 1865, N o. 49,507; vand It 'consists in the more simple und cheep arrangement for securing the heads to the body, thereby dispensing with the ztuge, plate, cap, and serewplug, ina-king the jack-spools much lighter, und equally Substanti-al and durable, and the heads :is easily repaired or replaced'when broken off.

To enable others to make and use our iinproyeinent, we will describe it more fully, referring to the drawings, end to the letters marked thereon.

On each end of the body A is :L serew-telnon, a. a,

and o, correspoinling box or thread is cut in the head B, in und around which Lwe recesses, out to receive n thin plate or punched metal-washer, c, zuid :t cap, d, the washer c yresting on the shoulder e e of the body A irmly when the head B is screwed on, the cap ll. covering the joint bet-Ween the hezul und body, and is held to its place by the screw-pin join-n.111), whose thread enters the hiu'd wood-pin j, which is put through at right angle in the body A.

Having fully described our invention, Te claim- As :n1 article of inmnlfitcture, o. jack-spool, constructed as herein described.

DANIEL R. DAY. JOHN G. FOLSOM. Witnesses:

E. S. MERRILL, S. I. HALL. 

